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Banded versus modified appliances for anchorage during maxillary protraction
Chunyan Liu1,2, Xing Qiao1,2, Shilong Zhang1,2
1Department of Orthodontics, College of Stomatology, Hebei Medical University, Shijiazhuang, Hebei, China.
Summary
A modified appliance for maxillary protraction in Class III malocclusions offers improved efficiency and comfort compared to traditional banded appliances. This approach reduces treatment time and anchorage loss in growing patients.
Area of Science:
- Orthodontics
- Craniofacial Development
Background:
- Class III malocclusion is characterized by maxillary deficiency.
- Maxillary protraction is a common orthodontic treatment approach.
- Anchorage control is crucial during maxillary protraction.
Purpose of the Study:
- To compare the efficacy of modified versus banded appliances for anchorage during maxillary protraction.
- To evaluate treatment efficiency and patient comfort.
Main Methods:
- A sample of 40 growing patients with Class III maxillary deficiency was studied.
- 20 patients received maxillary protraction with a modified appliance.
- 20 patients received maxillary protraction with a banded appliance.
- Pre- and posttreatment cephalometric radiographs were analyzed using statistical tests.
Main Results:
- The modified appliance group required fewer appointments and shorter treatment duration.
- The modified appliance demonstrated superior comfort, retention, and oral hygiene maintenance.
- Both appliances effectively corrected Class III malocclusion.
- The banded appliance group showed greater increases in mandibular plane angle, facial heights, molar mesialization, and incisor proclination.
Conclusions:
- The modified appliance is a promising alternative for treating growing Class III patients with maxillary deficiency.
- This approach can decrease treatment time and increase efficiency.
- The modified appliance may reduce anchorage loss compared to the banded appliance.
